1656407 - Assertion failure: aReflowInput.AvailableBSize() != nscoord((1 << 30) - 1) (must be Complete in an unconstrained available block-size), at /builds/worker/checkouts/gecko/layout/forms/nsFieldSetFrame.cpp:765

Status: NEW

(Core :: Layout, defect)

Description

[Jason Kratzer [:jkratzer]]

Attachment: testcase.html

Testcase found while fuzzing mozilla-central rev 56082fc4acfa (built with --enable-debug). Testcase requires the GNOME_ACCESSIBILITY=1 environment variable to be set.

Assertion failure: aReflowInput.AvailableBSize() != nscoord((1 << 30) - 1) (must be Complete in an unconstrained available block-size), at /builds/worker/checkouts/gecko/layout/forms/nsFieldSetFrame.cpp:765

rax = 0x00007f851f73a3f5   rdx = 0x0000000000000000
rcx = 0x000055c0705cae58   rbx = 0x00007ffc8b818c50
rsi = 0x00007f852b6b68b0   rdi = 0x00007f852b6b5680
rbp = 0x00007ffc8b8189b0   rsp = 0x00007ffc8b8185c0
r8 = 0x00007f852b6b68b0    r9 = 0x00007f852c608780
r10 = 0x0000000000000002   r11 = 0x0000000000000000
r12 = 0x00007f8511230178   r13 = 0x00007f850fc76200
r14 = 0x0000000000000825   r15 = 0x00007ffc8b818c4c
rip = 0x00007f851ad9b2d1
OS|Linux|0.0.0 Linux 5.3.0-62-generic #56~18.04.1-Ubuntu SMP Wed Jun 24 16:17:03 UTC 2020 x86_64
CPU|amd64|family 6 model 158 stepping 10|12
GPU|||
Crash|SIGSEGV /SEGV_MAPERR|0x0|0
0|0|libxul.so|nsFieldSetFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/forms/nsFieldSetFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|764|0x29
0|1|libxul.so|nsBlockReflowContext::ReflowBlock(mozilla::LogicalRect const&, bool, nsCollapsingMargin&, int, bool, nsLineBox*, mozilla::ReflowInput&, nsReflowStatus&, mozilla::BlockReflowInput&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockReflowContext.cpp:56082fc4acfacba40993e47ef8302993c59e264e|294|0x1e
0|2|libxul.so|nsBlockFrame::ReflowBlockFrame(mozilla::BlockReflowInput&, nsLineList_iterator, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|3761|0x43
0|3|libxul.so|nsBlockFrame::ReflowLine(mozilla::BlockReflowInput&, nsLineList_iterator, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|3110|0x16
0|4|libxul.so|nsBlockFrame::ReflowDirtyLines(mozilla::BlockReflowInput&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|2648|0x24
0|5|libxul.so|nsBlockFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1365|0xb
0|6|libxul.so|nsContainerFrame::ReflowChild(nsIFrame*, nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, mozilla::WritingMode const&, mozilla::LogicalPoint const&, nsSize const&, nsIFrame::ReflowChildFlags, nsReflowStatus&, nsOverflowContinuationTracker*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsContainerFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1076|0x1a
0|7|libxul.so|nsColumnSetFrame::ReflowChildren(mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&, nsColumnSetFrame::ReflowConfig const&, bool)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsColumnSetFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|701|0x52
0|8|libxul.so|nsColumnSetFrame::ReflowColumns(mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&, nsColumnSetFrame::ReflowConfig&, bool)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsColumnSetFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|414|0x31
0|9|libxul.so|nsColumnSetFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsColumnSetFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1253|0x43
0|10|libxul.so|nsBlockReflowContext::ReflowBlock(mozilla::LogicalRect const&, bool, nsCollapsingMargin&, int, bool, nsLineBox*, mozilla::ReflowInput&, nsReflowStatus&, mozilla::BlockReflowInput&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockReflowContext.cpp:56082fc4acfacba40993e47ef8302993c59e264e|294|0x1e
0|11|libxul.so|nsBlockFrame::ReflowBlockFrame(mozilla::BlockReflowInput&, nsLineList_iterator, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|3761|0x43
0|12|libxul.so|nsBlockFrame::ReflowLine(mozilla::BlockReflowInput&, nsLineList_iterator, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|3110|0x16
0|13|libxul.so|nsBlockFrame::ReflowDirtyLines(mozilla::BlockReflowInput&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|2648|0x24
0|14|libxul.so|nsBlockFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1365|0xb
0|15|libxul.so|nsBlockReflowContext::ReflowBlock(mozilla::LogicalRect const&, bool, nsCollapsingMargin&, int, bool, nsLineBox*, mozilla::ReflowInput&, nsReflowStatus&, mozilla::BlockReflowInput&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockReflowContext.cpp:56082fc4acfacba40993e47ef8302993c59e264e|294|0x1e
0|16|libxul.so|nsBlockFrame::ReflowBlockFrame(mozilla::BlockReflowInput&, nsLineList_iterator, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|3761|0x43
0|17|libxul.so|nsBlockFrame::ReflowLine(mozilla::BlockReflowInput&, nsLineList_iterator, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|3110|0x16
0|18|libxul.so|nsBlockFrame::ReflowDirtyLines(mozilla::BlockReflowInput&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|2648|0x24
0|19|libxul.so|nsBlockFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1365|0xb
0|20|libxul.so|nsContainerFrame::ReflowChild(nsIFrame*, nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, mozilla::WritingMode const&, mozilla::LogicalPoint const&, nsSize const&, nsIFrame::ReflowChildFlags, nsReflowStatus&, nsOverflowContinuationTracker*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsContainerFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1076|0x1a
0|21|libxul.so|nsColumnSetFrame::ReflowChildren(mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&, nsColumnSetFrame::ReflowConfig const&, bool)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsColumnSetFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|701|0x52
0|22|libxul.so|nsColumnSetFrame::ReflowColumns(mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&, nsColumnSetFrame::ReflowConfig&, bool)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsColumnSetFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|414|0x31
0|23|libxul.so|nsColumnSetFrame::FindBestBalanceBSize(mozilla::ReflowInput const&, nsPresContext*, nsColumnSetFrame::ReflowConfig&, nsColumnSetFrame::ColumnBalanceData, mozilla::ReflowOutput&, bool, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsColumnSetFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1131|0x25
0|24|libxul.so|nsColumnSetFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsColumnSetFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1260|0x39
0|25|libxul.so|nsBlockReflowContext::ReflowBlock(mozilla::LogicalRect const&, bool, nsCollapsingMargin&, int, bool, nsLineBox*, mozilla::ReflowInput&, nsReflowStatus&, mozilla::BlockReflowInput&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockReflowContext.cpp:56082fc4acfacba40993e47ef8302993c59e264e|294|0x1e
0|26|libxul.so|nsBlockFrame::ReflowBlockFrame(mozilla::BlockReflowInput&, nsLineList_iterator, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|3761|0x43
0|27|libxul.so|nsBlockFrame::ReflowLine(mozilla::BlockReflowInput&, nsLineList_iterator, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|3110|0x16
0|28|libxul.so|nsBlockFrame::ReflowDirtyLines(mozilla::BlockReflowInput&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|2648|0x24
0|29|libxul.so|nsBlockFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1365|0xb
0|30|libxul.so|nsContainerFrame::ReflowChild(nsIFrame*, nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, mozilla::WritingMode const&, mozilla::LogicalPoint const&, nsSize const&, nsIFrame::ReflowChildFlags, nsReflowStatus&, nsOverflowContinuationTracker*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsContainerFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1076|0x1a
0|31|libxul.so|nsCanvasFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsCanvasFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|749|0x46
0|32|libxul.so|nsContainerFrame::ReflowChild(nsIFrame*, nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, mozilla::WritingMode const&, mozilla::LogicalPoint const&, nsSize const&, nsIFrame::ReflowChildFlags, nsReflowStatus&, nsOverflowContinuationTracker*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsContainerFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1076|0x1a
0|33|libxul.so|nsHTMLScrollFrame::ReflowScrolledFrame(mozilla::ScrollReflowInput*, bool, bool, mozilla::ReflowOutput*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsGfxScrollFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|691|0x3a
0|34|libxul.so|nsHTMLScrollFrame::ReflowContents(mozilla::ScrollReflowInput*, mozilla::ReflowOutput const&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsGfxScrollFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|805|0x15
0|35|libxul.so|nsHTMLScrollFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsGfxScrollFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1200|0x15
0|36|libxul.so|nsContainerFrame::ReflowChild(nsIFrame*, nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, int, int, nsIFrame::ReflowChildFlags, nsReflowStatus&, nsOverflowContinuationTracker*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsContainerFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1116|0x18
0|37|libxul.so|mozilla::ViewportFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/ViewportFrame.cpp:56082fc4acfacba40993e47ef8302993c59e264e|297|0x2b
0|38|libxul.so|mozilla::PresShell::DoReflow(nsIFrame*, bool, mozilla::OverflowChangedTracker*)|hg:hg.mozilla.org/mozilla-central:layout/base/PresShell.cpp:56082fc4acfacba40993e47ef8302993c59e264e|9602|0x1c
0|39|libxul.so|mozilla::PresShell::ProcessReflowCommands(bool)|hg:hg.mozilla.org/mozilla-central:layout/base/PresShell.cpp:56082fc4acfacba40993e47ef8302993c59e264e|9775|0x12
0|40|libxul.so|mozilla::PresShell::DoFlushPendingNotifications(mozilla::ChangesToFlush)|hg:hg.mozilla.org/mozilla-central:layout/base/PresShell.cpp:56082fc4acfacba40993e47ef8302993c59e264e|4233|0x11
0|41|libxul.so|nsDocumentViewer::LoadComplete(nsresult)|hg:hg.mozilla.org/mozilla-central:layout/base/nsDocumentViewer.cpp:56082fc4acfacba40993e47ef8302993c59e264e|954|0x29
0|42|libxul.so|nsDocShell::EndPageLoad(nsIWebProgress*, nsIChannel*, nsresult)|hg:hg.mozilla.org/mozilla-central:docshell/base/nsDocShell.cpp:56082fc4acfacba40993e47ef8302993c59e264e|6172|0x14
0|43|libxul.so|nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult)|hg:hg.mozilla.org/mozilla-central:docshell/base/nsDocShell.cpp:56082fc4acfacba40993e47ef8302993c59e264e|5499|0x11
0|44|libxul.so|{virtual override thunk({offset(-448)}, nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult))}|||0x10
0|45|libxul.so|nsDocLoader::DoFireOnStateChange(nsIWebProgress*, nsIRequest*, int&, nsresult)|hg:hg.mozilla.org/mozilla-central:uriloader/base/nsDocLoader.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1331|0xe0
0|46|libxul.so|nsDocLoader::doStopDocumentLoad(nsIRequest*, nsresult)|hg:hg.mozilla.org/mozilla-central:uriloader/base/nsDocLoader.cpp:56082fc4acfacba40993e47ef8302993c59e264e|937|0x28
0|47|libxul.so|nsDocLoader::DocLoaderIsEmpty(bool, mozilla::Maybe<nsresult> const&)|hg:hg.mozilla.org/mozilla-central:uriloader/base/nsDocLoader.cpp:56082fc4acfacba40993e47ef8302993c59e264e|757|0x15
0|48|libxul.so|nsDocLoader::OnStopRequest(nsIRequest*, nsresult)|hg:hg.mozilla.org/mozilla-central:uriloader/base/nsDocLoader.cpp:56082fc4acfacba40993e47ef8302993c59e264e|640|0x12
0|49|libxul.so|{virtual override thunk({offset(-8)}, nsDocLoader::OnStopRequest(nsIRequest*, nsresult))}|||0xd
0|50|libxul.so|mozilla::net::nsLoadGroup::NotifyRemovalObservers(nsIRequest*, nsresult)|hg:hg.mozilla.org/mozilla-central:netwerk/base/nsLoadGroup.cpp:56082fc4acfacba40993e47ef8302993c59e264e|615|0x14
0|51|libxul.so|mozilla::net::nsLoadGroup::RemoveRequest(nsIRequest*, nsISupports*, nsresult)|hg:hg.mozilla.org/mozilla-central:netwerk/base/nsLoadGroup.cpp:56082fc4acfacba40993e47ef8302993c59e264e|522|0xe
0|52|libxul.so|mozilla::dom::Document::DoUnblockOnload()|hg:hg.mozilla.org/mozilla-central:dom/base/Document.cpp:56082fc4acfacba40993e47ef8302993c59e264e|10782|0x1c
0|53|libxul.so|mozilla::dom::Document::UnblockOnload(bool)|hg:hg.mozilla.org/mozilla-central:dom/base/Document.cpp:56082fc4acfacba40993e47ef8302993c59e264e|10712|0x8
0|54|libxul.so|mozilla::dom::Document::DispatchContentLoadedEvents()|hg:hg.mozilla.org/mozilla-central:dom/base/Document.cpp:56082fc4acfacba40993e47ef8302993c59e264e|7330|0xd
0|55|libxul.so|mozilla::detail::RunnableMethodImpl<mozilla::dom::Document*, void (mozilla::dom::Document::*)(), true, (mozilla::RunnableKind)0, >::Run()|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThreadUtils.h:56082fc4acfacba40993e47ef8302993c59e264e|1240|0x17
0|56|libxul.so|mozilla::SchedulerGroup::Runnable::Run()|hg:hg.mozilla.org/mozilla-central:xpcom/threads/SchedulerGroup.cpp:56082fc4acfacba40993e47ef8302993c59e264e|146|0x11
0|57|libxul.so|mozilla::RunnableTask::Run()|hg:hg.mozilla.org/mozilla-central:xpcom/threads/TaskController.cpp:56082fc4acfacba40993e47ef8302993c59e264e|242|0x11
0|58|libxul.so|mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/TaskController.cpp:56082fc4acfacba40993e47ef8302993c59e264e|512|0x9
0|59|libxul.so|mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/TaskController.cpp:56082fc4acfacba40993e47ef8302993c59e264e|371|0x5
0|60|libxul.so|mozilla::TaskController::ProcessPendingMTTask(bool)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/TaskController.cpp:56082fc4acfacba40993e47ef8302993c59e264e|168|0x8
0|61|libxul.so|mozilla::detail::RunnableFunction<mozilla::TaskController::InitializeInternal()::$_4>::Run()|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThreadUtils.h:56082fc4acfacba40993e47ef8302993c59e264e|577|0xf
0|62|libxul.so|nsThread::ProcessNextEvent(bool, bool*)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThread.cpp:56082fc4acfacba40993e47ef8302993c59e264e|1234|0xe
0|63|libxul.so|NS_ProcessNextEvent(nsIThread*, bool)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThreadUtils.cpp:56082fc4acfacba40993e47ef8302993c59e264e|513|0xc
0|64|libxul.so|mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*)|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessagePump.cpp:56082fc4acfacba40993e47ef8302993c59e264e|87|0x7
0|65|libxul.so|MessageLoop::RunInternal()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:56082fc4acfacba40993e47ef8302993c59e264e|334|0x17
0|66|libxul.so|MessageLoop::Run()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:56082fc4acfacba40993e47ef8302993c59e264e|309|0x8
0|67|libxul.so|nsBaseAppShell::Run()|hg:hg.mozilla.org/mozilla-central:widget/nsBaseAppShell.cpp:56082fc4acfacba40993e47ef8302993c59e264e|137|0xd
0|68|libxul.so|XRE_RunAppShell()|hg:hg.mozilla.org/mozilla-central:toolkit/xre/nsEmbedFunctions.cpp:56082fc4acfacba40993e47ef8302993c59e264e|913|0xe
0|69|libxul.so|mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*)|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessagePump.cpp:56082fc4acfacba40993e47ef8302993c59e264e|237|0x5
0|70|libxul.so|MessageLoop::RunInternal()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:56082fc4acfacba40993e47ef8302993c59e264e|334|0x17
0|71|libxul.so|MessageLoop::Run()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:56082fc4acfacba40993e47ef8302993c59e264e|309|0x8
0|72|libxul.so|XRE_InitChildProcess(int, char**, XREChildData const*)|hg:hg.mozilla.org/mozilla-central:toolkit/xre/nsEmbedFunctions.cpp:56082fc4acfacba40993e47ef8302993c59e264e|744|0x5
0|73|firefox-bin|content_process_main(mozilla::Bootstrap*, int, char**)|hg:hg.mozilla.org/mozilla-central:ipc/contentproc/plugin-container.cpp:56082fc4acfacba40993e47ef8302993c59e264e|56|0x11
0|74|firefox-bin|main|hg:hg.mozilla.org/mozilla-central:browser/app/nsBrowserApp.cpp:56082fc4acfacba40993e47ef8302993c59e264e|303|0x20
0|75|firefox-bin||||0x1ae86
0|76|firefox-bin||||0x1afa8

Comment 1

[James Teh [:Jamie]]

While I understand this seems to require GNOME_ACCESSIBILITY to be set, I don't see a11y anywhere in the stack. I wonder if this is just timing related? Moving into layout for now.

Comment 2

[Jason Kratzer [:jkratzer]]

Bugmon Analysis:
Verified bug as reproducible on mozilla-central 20200804091327-7cb90fa4f485.
The bug appears to have been introduced in the following build range:
> Start: 9420b5dc27e0cdf30a65b1b733400a970b3cb708 (20191202220401)
> End: 8e08311f2d873bd86fe624b60d01df1ba510e2aa (20191203094830)
> Pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=9420b5dc27e0cdf30a65b1b733400a970b3cb708&tochange=8e08311f2d873bd86fe624b60d01df1ba510e2aa

Comment 4

[Bugmon [:jkratzer for issues]]

Bugmon Analysis
Unable to reproduce bug 1656407 using build mozilla-central 20201205093858-7ce95b6cde26. Without a baseline, bugmon is unable to analyze this bug.
Removing bugmon keyword as no further action possible. Please review the bug and re-add the keyword for further analysis.